Laser Oscillator Blower Speed Estimation via Pressure
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Solution Overview
Problem
Existing laser oscillators require expensive rotation speed detection devices like encoders to accurately restart the blower after idling, increasing manufacturing costs and power consumption.
Innovation Solution
A laser oscillator that estimates blower rotation speed using a manometer to measure pressure at a predetermined position, correlating it with pre-stored relationships to control the blower's restart speed without additional detection devices, and includes features like an uninterruptible power source and correction mechanisms for temperature and flow rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a rotation speed detection device such as an encoder is used to detect the rotation speed of the blower, then the rotation speed can be accurately detected, but the manufacturing cost increases
Solution Approach 1:
The patent replaces the mechanical rotation speed detection device (encoder) with a pressure-based detection system. The manometer measures pressure changes in the laser medium flow path, and the controller estimates rotation speed based on the relationship between pressure and rotation speed, thereby eliminating the need for expensive mechanical detection devices while maintaining accurate rotation speed information.
Solution Approach 2:
The patent introduces pressure as an intermediary parameter to indirectly measure rotation speed. Instead of directly detecting rotation speed with an encoder, the system measures pressure changes in the laser medium flow path caused by blower operation and uses this pressure information to estimate the rotation speed, providing a cost-effective indirect measurement approach.
2Use of energy by moving object
If the power supply to the blower is stopped to reduce power consumption, then power consumption decreases, but the blower requires time to restart operation
Solution Approach 1:
The patent performs preliminary detection of the blower's idling rotation speed using pressure measurement before the restart command is issued. When the blower is stopped to save power, the system continuously monitors pressure changes to determine the current rotation speed during idling. This preliminary detection enables the controller to immediately restart the blower at the correct speed without delay when power is restored or cooling is needed.
Solution Approach 2:
The patent implements a feedback mechanism where the controller continuously monitors pressure changes in the laser medium flow path to detect the blower's rotation speed during idling. This feedback information is used to control the restart process, ensuring the blower resumes operation at the appropriate speed immediately when required, thus minimizing restart time while maintaining energy efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables quick and accurate restart of the blower during idling, reducing manufacturing costs and power consumption by utilizing existing manometer technology for pressure-based rotation speed estimation.
Implementation Method 1
a manometer which measures a pressure of the laser medium at a predetermined position of the laser medium flow path
Data Source
AI summary
A laser oscillator which can estimate the rotation speed of a blower in an idle state at cheaper cost and higher precision. The laser oscillator is comprised of a resonator part, laser medium flow path, blower, drive part, controller, manometer which measures the pressure of the laser medium at a predetermined position of the laser medium flow path, and rotation speed estimating part which uses the pressure of the laser medium which is measured by the manometer and a predetermined relationship between the pressure of the laser medium and the blower rotation speed at a certain position as the basis to estimate the rotation speed of the blower. The controller controls the drive part so as to restart operation of the blower at the rotation speed which is estimated by the rotation speed estimating part when the power supply to the blower is stopped and the blower is idling.